/* =========================================================
   QR CODE GENERATOR
   Extends the shared /tools visual system.
   ========================================================= */

.qr-workspace {
    padding: 0;
    overflow: hidden;
}

.qr-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(360px, .85fr);
    min-height: 720px;
}

.qr-builder-panel,
.qr-preview-panel {
    min-width: 0;
    padding: 28px;
}

.qr-builder-panel {
    border-right: 1px solid var(--line);
}

.qr-preview-panel {
    position: sticky;
    top: calc(var(--nav-height) + 18px);
    align-self: start;
    background:
        radial-gradient(circle at 50% 22%, rgba(119, 151, 255, .08), transparent 30%),
        rgba(7, 9, 18, .34);
}

.qr-panel-heading,
.qr-preview-head,
.qr-logo-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
}

.qr-panel-heading h2,
.qr-preview-head h2 {
    margin: 7px 0 0;
    font-family: var(--display);
    font-size: clamp(1.9rem, 3vw, 2.8rem);
    line-height: 1;
    letter-spacing: -.04em;
}

.qr-panel-heading.compact h3 {
    margin: 7px 0 0;
    color: var(--text-soft);
    font-family: var(--display);
    font-size: 1.35rem;
    letter-spacing: -.025em;
}

.qr-type-tabs {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-top: 24px;
}

.qr-type-tab {
    min-height: 62px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 12px;
    color: var(--muted);
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, .018);
    font: inherit;
    font-family: var(--mono);
    font-size: .68rem;
    cursor: pointer;
    transition: color 180ms ease, border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.qr-type-tab:hover {
    color: var(--text);
    border-color: rgba(119, 151, 255, .32);
    transform: translateY(-1px);
}

.qr-type-tab.active {
    color: var(--signal-strong);
    border-color: rgba(119, 151, 255, .42);
    background: rgba(119, 151, 255, .075);
    box-shadow: inset 0 0 0 1px rgba(119, 151, 255, .05);
}

.qr-type-tab i {
    font-size: .84rem;
}

.qr-content-forms {
    margin-top: 18px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 15px;
    background: rgba(7, 9, 18, .42);
}

.qr-content-form[hidden] {
    display: none !important;
}

.qr-field-grid {
    display: grid;
    gap: 14px;
}

.qr-field-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.qr-span-2 {
    grid-column: 1 / -1;
}

.qr-section-divider {
    height: 1px;
    margin: 28px 0;
    background: var(--line);
}

.qr-settings-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.qr-settings-grid .tool-select {
    width: 100%;
}

.qr-color-control {
    min-height: 48px;
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 7px 11px;
    border: 1px solid var(--line);
    border-radius: 11px;
    background: rgba(255, 255, 255, .022);
}

.qr-color-control input[type="color"] {
    width: 34px;
    height: 34px;
    padding: 0;
    overflow: hidden;
    border: 0;
    border-radius: 8px;
    background: transparent;
    cursor: pointer;
}

.qr-color-control input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 0;
}

.qr-color-control input[type="color"]::-webkit-color-swatch {
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 8px;
}

.qr-color-control code {
    color: var(--text-soft);
    font-family: var(--mono);
    font-size: .72rem;
}

.qr-range-field {
    align-content: end;
}

.qr-range-field > span {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.qr-range-field strong {
    color: var(--signal-strong);
    font-weight: 500;
}

.qr-range {
    width: 100%;
    height: 6px;
    appearance: none;
    -webkit-appearance: none;
    border-radius: 999px;
    background: rgba(255, 255, 255, .13);
    outline: none;
}

.qr-range::-webkit-slider-thumb {
    width: 18px;
    height: 18px;
    appearance: none;
    -webkit-appearance: none;
    border: 2px solid rgba(255, 255, 255, .28);
    border-radius: 50%;
    background: var(--signal);
    box-shadow: 0 4px 16px rgba(0, 0, 0, .25);
    cursor: pointer;
}

.qr-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, .28);
    border-radius: 50%;
    background: var(--signal);
    cursor: pointer;
}

.qr-transparent-check {
    align-self: end;
}

.qr-logo-card {
    margin-top: 16px;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: rgba(255, 255, 255, .018);
}

.qr-logo-head strong,
.qr-logo-head small {
    display: block;
}

.qr-logo-head strong {
    margin-top: 6px;
    color: var(--text-soft);
}

.qr-logo-head small {
    margin-top: 5px;
    max-width: 520px;
    color: var(--muted);
    font-size: .76rem;
    line-height: 1.5;
}

.qr-logo-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.qr-logo-settings {
    display: grid;
    grid-template-columns: 72px minmax(180px, 1fr) minmax(220px, auto);
    gap: 14px;
    align-items: center;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--line);
}

.qr-logo-preview-wrap {
    width: 72px;
    height: 72px;
    display: grid;
    place-items: center;
    padding: 7px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fff;
}

.qr-logo-preview-wrap img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.qr-ready-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    min-height: 32px;
    padding: 0 10px;
    color: var(--status);
    border: 1px solid rgba(74, 222, 128, .2);
    border-radius: 999px;
    background: rgba(74, 222, 128, .05);
    font-family: var(--mono);
    font-size: .64rem;
    white-space: nowrap;
}

.qr-ready-badge.error {
    color: var(--danger);
    border-color: rgba(248, 113, 113, .22);
    background: rgba(248, 113, 113, .05);
}

.qr-canvas-shell {
    width: min(100%, 460px);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    margin: 24px auto 18px;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background:
        linear-gradient(45deg, rgba(255,255,255,.025) 25%, transparent 25%),
        linear-gradient(-45deg, rgba(255,255,255,.025) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, rgba(255,255,255,.025) 75%),
        linear-gradient(-45deg, transparent 75%, rgba(255,255,255,.025) 75%),
        rgba(255, 255, 255, .012);
    background-size: 22px 22px;
    background-position: 0 0, 0 11px, 11px -11px, -11px 0;
    box-shadow: inset 0 0 60px rgba(119, 151, 255, .025);
}

#qrCanvas {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: 10px;
    image-rendering: auto;
}

.qr-preview-metrics {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.qr-preview-metrics > div {
    min-width: 0;
    padding: 11px 12px;
    border: 1px solid var(--line);
    border-radius: 11px;
    background: rgba(255, 255, 255, .018);
}

.qr-preview-metrics span,
.qr-preview-metrics strong {
    display: block;
}

.qr-preview-metrics span {
    color: var(--muted);
    font-family: var(--mono);
    font-size: .58rem;
    text-transform: uppercase;
}

.qr-preview-metrics strong {
    margin-top: 4px;
    overflow: hidden;
    color: var(--text-soft);
    font-family: var(--mono);
    font-size: .72rem;
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.qr-download-actions {
    display: grid;
    grid-template-columns: 1.25fr .7fr;
    gap: 8px;
    margin-top: 14px;
}

.qr-download-actions .btn {
    width: 100%;
    justify-content: center;
}

.qr-payload-card {
    margin-top: 14px;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(7, 9, 18, .48);
}

.qr-payload-head {
    min-height: 42px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 7px 10px 7px 13px;
    color: var(--muted);
    border-bottom: 1px solid var(--line);
    font-family: var(--mono);
    font-size: .64rem;
}

#qrPayloadPreview {
    display: block;
    max-height: 118px;
    padding: 12px 13px;
    overflow: auto;
    color: var(--text-soft);
    white-space: pre-wrap;
    overflow-wrap: anywhere;
    font-family: var(--mono);
    font-size: .7rem;
    line-height: 1.55;
}

.qr-local-note {
    margin-top: 14px;
}

#qrStatus {
    display: block;
    margin: 12px 0 0;
}

.qr-info-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.qr-info-grid .tool-result-card {
    padding: 20px;
}

.qr-info-grid .tool-result-card h3 {
    margin: 15px 0 8px;
    color: var(--text);
    font-size: 1rem;
}

.qr-info-grid .tool-result-card p {
    margin: 0;
    color: var(--muted);
    font-size: .8rem;
    line-height: 1.65;
}

@media (max-width: 1120px) {
    .qr-layout {
        grid-template-columns: 1fr;
    }

    .qr-builder-panel {
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }

    .qr-preview-panel {
        position: static;
    }

    .qr-preview-panel {
        display: grid;
        grid-template-columns: minmax(280px, .9fr) minmax(320px, 1.1fr);
        column-gap: 24px;
        align-items: start;
    }

    .qr-preview-head,
    .qr-canvas-shell {
        grid-column: 1;
    }

    .qr-preview-metrics,
    .qr-download-actions,
    .qr-payload-card,
    .qr-local-note,
    #qrStatus {
        grid-column: 2;
    }

    .qr-preview-metrics {
        margin-top: 66px;
    }

    .qr-canvas-shell {
        margin-bottom: 0;
    }

    .qr-info-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .qr-builder-panel,
    .qr-preview-panel {
        padding: 20px;
    }

    .qr-panel-heading,
    .qr-logo-head,
    .qr-preview-head {
        flex-direction: column;
        align-items: stretch;
    }

    .qr-type-tabs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qr-field-grid.two,
    .qr-settings-grid {
        grid-template-columns: 1fr;
    }

    .qr-span-2 {
        grid-column: auto;
    }

    .qr-logo-actions {
        width: 100%;
    }

    .qr-logo-actions .btn {
        flex: 1;
        justify-content: center;
    }

    .qr-logo-settings {
        grid-template-columns: 64px 1fr;
    }

    .qr-logo-settings .tool-check {
        grid-column: 1 / -1;
    }

    .qr-logo-preview-wrap {
        width: 64px;
        height: 64px;
    }

    .qr-preview-panel {
        display: block;
    }

    .qr-preview-metrics {
        margin-top: 0;
    }

    .qr-canvas-shell {
        width: min(100%, 420px);
        margin: 20px auto 16px;
        padding: 12px;
        border-radius: 18px;
    }

    .qr-download-actions {
        grid-template-columns: 1fr 1fr;
    }

    .qr-info-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 460px) {
    .qr-builder-panel,
    .qr-preview-panel {
        padding: 16px;
    }

    .qr-content-forms {
        padding: 14px;
    }

    .qr-type-tab {
        min-height: 54px;
        font-size: .62rem;
    }

    .qr-download-actions {
        grid-template-columns: 1fr;
    }

    .qr-preview-metrics {
        grid-template-columns: 1fr 1fr;
    }

    .qr-logo-settings {
        grid-template-columns: 1fr;
    }

    .qr-logo-preview-wrap {
        width: 72px;
        height: 72px;
    }
}